CN109537601A - A kind of foundation pit supporting construction and its construction method based on campshed and inner support - Google Patents
A kind of foundation pit supporting construction and its construction method based on campshed and inner support Download PDFInfo
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- CN109537601A CN109537601A CN201811350510.6A CN201811350510A CN109537601A CN 109537601 A CN109537601 A CN 109537601A CN 201811350510 A CN201811350510 A CN 201811350510A CN 109537601 A CN109537601 A CN 109537601A
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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Abstract
The invention discloses a kind of foundation pit supporting construction and its construction method based on campshed and inner support, including multiple fender piles being vertically arranged, multiple fender piles include symmetrically arranged first fender pile and the second fender pile two-by-two, two first fender piles and two the second fender piles are hollow structure, and inserted block is equipped in two the first fender piles and two the second fender piles, two first fender piles are equipped with the strip gab that setting is matched with inserted block with the downside side wall of two the second fender piles, strip gab setting is run through in one end of multiple inserted blocks, and the other end of multiple inserted blocks is connect by telescopic device with the inside of the first fender pile and the second fender pile respectively.The present invention can make fender pile more go deep into bottom of foundation ditch, improve the bonding strength of fender pile and foundation pit, and have slope deforming observation program, and real-time monitoring reduces the probability of accident generation.
Description
Technical field
The present invention relates to foundation pit construction technical field more particularly to a kind of foundation pit supporting constructions based on campshed and inner support
And its construction method.
Background technique
Pattern foundation pit supporting structure is the safety to guarantee Underground Construction and foundation pit surrounding environment, to foundation pit side-wall and peripheral ring
Supporting and retaining system, reinforcing and the safeguard measure that border uses.Foundation pit supporting project is a temporary project, and the safety stock of design relatively can be small
A bit, but it is related with provincialism.Its feature of different zones geological conditions is not also identical.Foundation pit supporting project be again geotechnical engineering,
The subject that Structural Engineering and construction technology cross one another is the system engineering of Various Complex factor reciprocal effect, is theoretically
Wait the complex art subject of development；
The embedded more letter of the fender pile of existing foundation pit supporting construction and its construction method based on campshed and inner support
Single, the connection of fender pile and bottom of foundation ditch is not sufficiently stable, and lacks slope deforming observation program, and accident rate is high, thus we
It proposes a kind of to solve the above problems based on the foundation pit supporting construction and its construction method of campshed and inner support.
Summary of the invention
The purpose of the present invention is to solve problems of the prior art, and the one kind proposed is based on campshed and interior branch
The foundation pit supporting construction and its construction method of support.
To achieve the goals above, present invention employs following technical solutions:
A kind of foundation pit supporting construction based on campshed and inner support, it is multiple described including multiple fender piles being vertically arranged
Fender pile includes symmetrically arranged first fender pile and the second fender pile two-by-two, and two first fender piles and two second prevent
Fender pile is hollow structure, and inserted block is equipped in two the first fender piles and two the second fender piles, and two described first anti-
Fender pile be equipped with the downside side wall of two the second fender piles matched with inserted block setting strip gab, the one of multiple inserted blocks
End is arranged through strip gab, and the other end of multiple inserted blocks is anti-by telescopic device and the first fender pile and second respectively
The inside of fender pile connects, and two first fender pile side side walls opposite with two the second fender piles are fixedly connected to water
The limit plate of flat setting, is equipped with horizontally disposed retaining-plate, institute between two first fender piles and two the second fender piles
The surface that retaining-plate is located at multiple limit plates is stated, and retaining-plate is equipped with the screw thread locking bar for matching setting with limit plate to a,
Multiple screw thread locking bars run through retaining-plate and are threadedly coupled with retaining-plate, and multiple screw thread locking bars run through limit plate,
And the thread groove that setting is matched with screw thread locking bar is equipped on multiple limit plates.
Preferably, multiple telescopic devices include horizontally disposed threaded rod, one end point of multiple threaded rods
It is not rotatablely connected with the inner wall of the first fender pile and the second fender pile, and the other end of multiple threaded rods extends through the first protection
The setting of the side wall of stake and the second fender pile, is arranged that there are two symmetrically arranged nuts, and each spiral shell on multiple threaded rods
Push rod is rotatably connected on mother, the other end of multiple push rods passes through the fixed company of upside side wall of link block and inserted block
It connects, multiple push rods are rotatablely connected with link block.
Preferably, multiple to be fixedly connected on first fender pile and the inserted block outside two the second fender piles
Circular cone.
Preferably, the two sides side wall of multiple inserted blocks is equipped with the opposite mounting groove that is open, and multiple mounting grooves
Bottom wall pass through multiple springs and be fixedly connected with mounting blocks, be fixedly connected to pulley on each mounting blocks.
Preferably, the downside side wall of multiple limit plates slidably connects the first sliding lock block, and the first slide lock
Block is arranged through screw thread locking bar.
Preferably, the second slide lock is slidably connected on the outer wall of multiple first fender piles and the second fender pile
Block, and multiple second sliding lock blocks run through threaded rod setting.
Foundation ditch construction method based on campshed and inner support, comprising the following steps:
(1) pit earthwork excavates: being required according to soil property, reasonably selects sloping coefficient slope, dug out and transport outside the earthwork all
, it digs to stopping at projected depth cutting the earth, finally using artificial clear base, when excavation, requires that progress should be layered according to pattern foundation pit supporting structure,
Live conjunction measuring personnel measure the absolute altitude of shoveling at any time, and the earthwork is avoided to backbreak, and excavation of foundation pit finishes, and should carry out pricker spy comprehensively,
Then check of foundation subsoil can be carried out with relevant departments such as prospecting, design, owner, management；
(2) foundation pit support plan: to prevent foundation pit crater wall slope failure, it is necessary to which slope retaining is carried out by following to foundation pit walls
Scheme carries out, and is embedded to fender pile → addition limit plate → reinforcement protection stake → inspection → examination → continuation earth excavation；
(3) supporting construction is with earth excavation: supporting construction intersects synchronous carry out with earth excavation: it is deep that earthmoving machinery excavates control
Work surface height is no more than 1.0m, and every layer of excavation height is not greater than 0.5m when chance soil layer is poor, and spacing accordingly adjusts, to upper one
After the completion of operation, the excavation of next work surface can be carried out, forbids to backbreak in advance, the work surface excavated must immediate support envelope
It closes, such as because the work surface that a variety of causes excavates is unable to immediate support, then mechanical earth excavation must organize backfill closed operation in time
Face, in case work surface exposure duration is too long and causes dangerous situation；
(4) slope deforming observation program:
1) foundation pit top of the slope sedimentation deformation is observed: it is arranged along foundation pit periphery, to monitor the deformation of excavation slope, in the middle part of periphery,
Layout points are answered at external corner, are arranged along foundation pit periphery, and part observation point should be laid in important building, on structures and important pipeline
Position, and the quantity and arrangement of adjustable observation point according to actual needs；
2) observe process: settlement observation point is buried before construction, every to excavate one layer of observation once, daily after the completion of excavation
Observation is primary, and observation is primary every three days after displacement and settlement stability, and observation in every seven days is primary after supporting construction reaches design strength,
If it was found that deformation is abnormal or when meeting heavy rain, heavy rain, Ying Jiami observation frequency should carry out information feedback to monitoring result in time,
Designer and related administrative staff should be notified when found the abnormal situation, in time so as to guide constructing or handling convenient for timely；
(5) it drainage sunk well: to prevent etch of the leakage of surface water to retaining wall scholar's body, is set in the vertical retaining wall of foundation pit surrounding
Drainage hole is set, draining pitch of holes determines that in the construction process, drainage hole should be added immediately by rises occur according to field condition；
(6) foundation pit later maintenance: in the construction process, it should be noted that hole sapwood material and mechanical preloading are forbidden to drain to crater wall
With the immersion foundation pit surrounding soil body, surface water is avoided to flow into foundation pit, when constructing basement, forbids to stop the disconnected power supply to draw water, to prevent
Rising of groundwater level is made, and at heavy losses, subsequent construction unit should be with base pit dewatering work close fit, it is ensured that safety guarantees entire
Engineering construction is gone on smoothly, and must not be backbreak under the conditions of former support system, and it is excessive to be otherwise likely to result in foundation pit deformation, even
There is bigger dangerous situation, brings safe mass hidden danger to engineering, Ying Jiaqiang deformation observation works, and one after the completion of excavation of foundation pit
In a month, Ying Jiami observation point increases observation frequency, the building retaining wall section within the scope of 2 times of foundation depths need to make it is horizontal with
The deformation observation of vertical both direction.
It is had the beneficial effect that in the present invention:
1, rotation threaded rod is able to drive two nuts and moves toward one another, to drive two push rods that link block is pushed to transport downwards
It is dynamic, enable the insertion bottom of foundation ditch that inserted block is more deep, screw thread rod locking can be guaranteed threaded rod work by the second sliding lock block
Make the stabilization of state；
2, the installation of circular cone is capable of increasing the pressure on inserted block surface, and inserted block is enable more to be easily plugged into the bottom of foundation pit
In portion's soil；
3, pulley can slide on the inner wall of the first fender pile and the second fender pile, keep the motion state of inserted block more steady
Fixed, screw thread locking bar is threadedly coupled with limit plate, can guarantee retaining-plate and the first fender pile and the second fender pile connection status
Stablize, screw fastening rod locking can be guaranteed the stabilization of screw thread locking bar working condition by the first sliding lock block；
4, observation adjustment persistently is carried out to earth excavation situation, observes foundation pit top of the slope sedimentation deformation, prevents engineering thing
Therefore.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of the foundation pit supporting construction based on campshed and inner support proposed by the present invention；
Fig. 2 is a kind of overlooking structure diagram of the foundation pit supporting construction based on campshed and inner support proposed by the present invention；
Fig. 3 is the structural schematic diagram in Fig. 1 at A.
In figure: 1 first fender pile, 2 second fender piles, 3 inserted blocks, 4 limit plates, 5 retaining-plates, 6 screw thread locking bars, 7 threaded rods,
8 nuts, 9 push rods, 10 link blocks, 11 circular cones, 12 mounting grooves, 13 springs, 14 mounting blocks, 15 pulleys, 16 first sliding lock blocks,
17 second sliding lock blocks.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
Referring to Fig.1-3, a kind of foundation pit supporting construction based on campshed and inner support, including multiple protection being vertically arranged
Stake, multiple fender piles include symmetrically arranged first fender pile 1 and the second fender pile 2 two-by-two, two the first fender piles 1 and two
Second fender pile 2 is hollow structure, and inserted block 3 is equipped in two the first fender piles 1 and two the second fender piles 2, and two
First fender pile 1 is equipped with the strip gab that setting is matched with inserted block 3 with the downside side wall of two the second fender piles 2, multiple to insert
Strip gab setting is run through in one end of block 3, and the other end of multiple inserted blocks 3 passes through telescopic device and the first fender pile respectively
1 and second fender pile 2 inside connection, it is equal on multiple inserted blocks 3 being located at outside the first fender pile 1 and two the second fender piles 2
It is fixedly connected with circular cone 11, the installation of circular cone 11 is capable of increasing the pressure on 3 surface of inserted block, enables inserted block 3 more easily
Insertion foundation pit bottom soil in；
Multiple telescopic devices include horizontally disposed threaded rod 7, one end of multiple threaded rods 7 respectively with the first fender pile
1 and second fender pile 2 inner wall rotation connection, and the other end of multiple threaded rods 7 extends through the first fender pile 1 and second anti-
The side wall of fender pile 2 is arranged, and is arranged that there are two symmetrically arranged nuts 8 on multiple threaded rods 7, and rotates on each nut 8
It is connected with push rod 9, the other end of multiple push rods 9 passes through link block 10 and is fixedly connected with the upside side wall of inserted block 3, multiple push rods
9 are rotatablely connected with link block 10, and it is sliding that second is slidably connected on the outer wall of multiple first fender piles 1 and the second fender pile 2
Dynamic closing piece 17, and multiple second sliding lock blocks 17 are arranged through threaded rod 7, rotation threaded rod 7 is able to drive two 8 phases of nut
To movement, to drive two push rods 9 that link block 10 is pushed to move downward, enable the insertion foundation pit bottom that inserted block 3 is more deep
Portion, the second sliding lock block 17 can lock threaded rod 7, guarantee the stabilization of 7 working condition of threaded rod；
Two the first fender piles 1 are fixedly connected to horizontally disposed with two opposite side side walls of the second fender pile 2
Limit plate 4, is equipped with horizontally disposed retaining-plate 5 between two the first fender piles 1 and two the second fender piles 2, retaining-plate 5 is located at
The surface of multiple limit plates 4, and retaining-plate 5 is equipped with the screw thread locking bar 6 for matching setting with limit plate 4 to a, multiple screw threads
Locking bar 6 is threadedly coupled through retaining-plate 5 and with retaining-plate 5, and multiple screw thread locking bars 6 run through limit plate 4, and multiple limit plates
The thread groove that setting is matched with screw thread locking bar 6 is equipped on 4, it is sliding that the downside side wall of multiple limit plates 4 slidably connects first
Dynamic closing piece 16, and the first sliding lock block 16 is arranged through screw thread locking bar 6, it is opposite that the two sides side wall of multiple inserted blocks 3 is equipped with opening
Mounting groove 12, and the bottom wall of multiple mounting grooves 12 passes through multiple springs 13 and is fixedly connected with mounting blocks 14, each mounting blocks
Pulley 15 is fixedly connected on 14, pulley 15 can slide on the inner wall of the first fender pile 1 and the second fender pile 2, make to insert
The motion state of block 3 is more stable, and screw thread locking bar 6 is threadedly coupled with limit plate 4, can guarantee retaining-plate 5 and the first fender pile 1
And the stabilization of 2 connection status of the second fender pile, the first sliding lock block 16 can lock screw thread locking bar 6, guarantee 6 work of screw thread locking bar
Make the stabilization of state；
Foundation ditch construction method based on campshed and inner support, comprising the following steps:
(1) pit earthwork excavates: being required according to soil property, reasonably selects sloping coefficient slope, dug out and transport outside the earthwork all
, it digs to stopping at projected depth cutting the earth, finally using artificial clear base, when excavation, requires that progress should be layered according to pattern foundation pit supporting structure,
Live conjunction measuring personnel measure the absolute altitude of shoveling at any time, and the earthwork is avoided to backbreak, and excavation of foundation pit finishes, and should carry out pricker spy comprehensively,
Then check of foundation subsoil can be carried out with relevant departments such as prospecting, design, owner, management；
(2) foundation pit support plan: to prevent foundation pit crater wall slope failure, it is necessary to which slope retaining is carried out by following to foundation pit walls
Scheme carries out, and is embedded to fender pile → addition limit plate → reinforcement protection stake → inspection → examination → continuation earth excavation；
(3) supporting construction is with earth excavation: supporting construction intersects synchronous carry out with earth excavation: it is deep that earthmoving machinery excavates control
Work surface height is no more than 1.0m, and every layer of excavation height is not greater than 0.5m when chance soil layer is poor, and spacing accordingly adjusts, to upper one
After the completion of operation, the excavation of next work surface can be carried out, forbids to backbreak in advance, the work surface excavated must immediate support envelope
It closes, such as because the work surface that a variety of causes excavates is unable to immediate support, then mechanical earth excavation must organize backfill closed operation in time
Face, in case work surface exposure duration is too long and causes dangerous situation；
(4) slope deforming observation program:
1) foundation pit top of the slope sedimentation deformation is observed: it is arranged along foundation pit periphery, to monitor the deformation of excavation slope, in the middle part of periphery,
Layout points are answered at external corner, are arranged along foundation pit periphery, and part observation point should be laid in important building, on structures and important pipeline
Position, and the quantity and arrangement of adjustable observation point according to actual needs；
2) observe process: settlement observation point is buried before construction, every to excavate one layer of observation once, daily after the completion of excavation
Observation is primary, and observation is primary every three days after displacement and settlement stability, and observation in every seven days is primary after supporting construction reaches design strength,
If it was found that deformation is abnormal or when meeting heavy rain, heavy rain, Ying Jiami observation frequency should carry out information feedback to monitoring result in time,
Designer and related administrative staff should be notified when found the abnormal situation, in time so as to guide constructing or handling convenient for timely；
(5) it drainage sunk well: to prevent etch of the leakage of surface water to retaining wall scholar's body, is set in the vertical retaining wall of foundation pit surrounding
Drainage hole is set, draining pitch of holes determines that in the construction process, drainage hole should be added immediately by rises occur according to field condition；
(6) foundation pit later maintenance: in the construction process, it should be noted that hole sapwood material and mechanical preloading are forbidden to drain to crater wall
With the immersion foundation pit surrounding soil body, surface water is avoided to flow into foundation pit, when constructing basement, forbids to stop the disconnected power supply to draw water, to prevent
Rising of groundwater level is made, and at heavy losses, subsequent construction unit should be with base pit dewatering work close fit, it is ensured that safety guarantees entire
Engineering construction is gone on smoothly, and must not be backbreak under the conditions of former support system, and it is excessive to be otherwise likely to result in foundation pit deformation, even
There is bigger dangerous situation, brings safe mass hidden danger to engineering, Ying Jiaqiang deformation observation works, and one after the completion of excavation of foundation pit
In a month, Ying Jiami observation point increases observation frequency, the building retaining wall section within the scope of 2 times of foundation depths need to make it is horizontal with
The deformation observation of vertical both direction.
In the present invention, when being constructed, excavation of foundation pit is carried out, multiple first fender piles 1 and multiple first are prevented
Fender pile 2 is placed in bottom of foundation ditch, is inserted into inserted block 3 and circular cone 11 in soil, and rotation threaded rod 7 is able to drive two 8 phases of nut
To movement, to drive two push rods 9 that link block 10 is pushed to move downward, enable the insertion foundation pit bottom that inserted block 3 is more deep
After portion, the first fender pile 1 and the second fender pile 2 are embedded, retaining-plate 5 is placed on multiple limit plates 4, screw thread locking bar is used
6 lock limit plate 4 and retaining-plate 5.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (7)
1. a kind of foundation pit supporting construction based on campshed and inner support, including multiple fender piles being vertically arranged, which is characterized in that
Multiple fender piles include symmetrically arranged first fender pile (1) and the second fender pile (2) two-by-two, two first protection
Stake (1) and two the second fender piles (2) are hollow structure, and two the first fender piles (1) and two the second fender piles (2) are interior
It is equipped with inserted block (3), the downside side wall of two first fender piles (1) and two the second fender piles (2) is equipped with and inserted block
(3) strip gab of matching setting, one end of multiple inserted blocks (3) are run through strip gab and are arranged, and multiple inserted blocks (3)
The other end is connect by telescopic device with the inside of the first fender pile (1) and the second fender pile (2) respectively, and two described first
Fender pile (1) and two opposite side side walls of the second fender pile (2) are fixedly connected to horizontally disposed limit plate (4), and two
Horizontally disposed retaining-plate (5) are equipped between a first fender pile (1) and two the second fender piles (2), the retaining-plate
(5) it is located at the surface of multiple limit plates (4), and retaining-plate (5) is equipped with the screw fastening for matching setting with limit plate (4) to a
Bar (6), multiple screw thread locking bars (6) are threadedly coupled through retaining-plate (5) and with retaining-plate (5), multiple screw fastenings
Bar (6) runs through limit plate (4), and the thread groove that setting is matched with screw thread locking bar (6) is equipped on multiple limit plates (4).
2. a kind of foundation pit supporting construction based on campshed and inner support according to claim 1, which is characterized in that Duo Gesuo
Stating telescopic device includes horizontally disposed threaded rod (7), one end of multiple threaded rods (7) respectively with the first fender pile
(1) and the inner wall of the second fender pile (2) is rotatablely connected, and the other end of multiple threaded rods (7) extends through the first fender pile (1)
And second fender pile (2) side wall setting, be arranged that there are two symmetrically arranged nut (8) on multiple threaded rods (7), and
It is rotatably connected to push rod (9) on each nut (8), the other end of multiple push rods (9) passes through link block (10) and inserts
The upside side wall of block (3) is fixedly connected, and multiple push rods (9) are rotatablely connected with link block (10).
3. a kind of foundation pit supporting construction based on campshed and inner support according to claim 1, which is characterized in that Duo Gewei
In being fixedly connected to circular cone (11) on first fender pile (1) inserted block (3) external with two the second fender piles (2).
4. a kind of foundation pit supporting construction based on campshed and inner support according to claim 1, which is characterized in that Duo Gesuo
The two sides side wall for stating inserted block (3) is equipped with the opposite mounting groove (12) that is open, and the bottom wall of multiple mounting grooves (12) is logical
It crosses multiple springs (13) to be fixedly connected with mounting blocks (14), is fixedly connected to pulley (15) on each mounting blocks (14).
5. a kind of foundation pit supporting construction based on campshed and inner support according to claim 1, which is characterized in that Duo Gesuo
The downside side wall for stating limit plate (4) slidably connects the first sliding lock block (16), and the first sliding lock block (16) runs through screw thread
Locking bar (6) setting.
6. a kind of foundation pit supporting construction and its construction method based on campshed and inner support according to claim 2, special
Sign is, slidably connects the second sliding lock block on the outer wall of multiple first fender piles (1) and the second fender pile (2)
(17), and multiple second sliding lock blocks (17) are arranged through threaded rod (7).
7. the foundation ditch construction method based on campshed and inner support, which comprises the following steps:
(1) pit earthwork excavates: being required according to soil property, reasonably selects sloping coefficient slope, digging out the earthwork, all outward transport appears on the scene, and digs
Stop cutting the earth to projected depth, finally using artificial clear base, when excavation requires that progress should be layered according to pattern foundation pit supporting structure, and scene is matched
The absolute altitude that survey crew measures shoveling at any time is closed, avoids the earthwork from backbreaking, excavation of foundation pit finishes, and should carry out pricker spy comprehensively, then can
Check of foundation subsoil is carried out with relevant departments such as prospecting, design, owner, management；
(2) foundation pit support plan: to prevent foundation pit crater wall slope failure, it is necessary to slope retaining be carried out to foundation pit walls and press following scheme
It carries out, is embedded to fender pile → addition limit plate → reinforcement protection stake → inspection → examination → continuation earth excavation；
(3) supporting construction is with earth excavation: supporting construction intersects synchronous carry out with earth excavation: earthmoving machinery, which excavates, controls deep operation
Face height is no more than 1.0m, and every layer of excavation height is not greater than 0.5m when chance soil layer is poor, and spacing accordingly adjusts, to a upper operation
After the completion, the excavation that can carry out next work surface is forbidden to backbreak in advance, the necessary immediate support closing of the work surface excavated, such as
Because the work surface that a variety of causes excavates is unable to immediate support, then mechanical earth excavation must organize backfill closed operation face in time, with
It is too long and cause dangerous situation to exempt from work surface exposure duration；
(4) slope deforming observation program:
1) foundation pit top of the slope sedimentation deformation is observed: being arranged along foundation pit periphery, to monitor the deformation of excavation slope, periphery middle part, external corner
Layout points are answered at place, are arranged along foundation pit periphery, and part observation point should be laid in important building, on structures and important pipeline position
It sets, and the quantity and arrangement of adjustable observation point according to actual needs；
2) observe process: settlement observation point is buried before construction, every to excavate one layer of observation once, observation daily after the completion of excavating
Once, once, observation in every seven days is primary after supporting construction reaches design strength, if sending out for observation every three days after displacement and settlement stability
When now deformation is abnormal or meets heavy rain, heavy rain, Ying Jiami observation frequency should carry out information feedback to monitoring result in time, discovery
Designer and related administrative staff should be notified when abnormal conditions, in time so as to guide constructing or handling convenient for timely；
(5) to prevent etch of the leakage of surface water to retaining wall scholar's body, row drainage sunk well: is set in the vertical retaining wall of foundation pit surrounding
Water hole, draining pitch of holes determine that in the construction process, drainage hole should be added immediately by rises occur according to field condition；
(6) foundation pit later maintenance: in the construction process, it should be noted that hole sapwood material and mechanical preloading are forbidden to drain and soak to crater wall
The foundation pit surrounding soil body is steeped, surface water is avoided to flow into foundation pit, when constructing basement, forbids to stop the disconnected power supply to draw water, to prevent water level
Rise is made, and at heavy losses, subsequent construction unit should be with base pit dewatering work close fit, it is ensured that safety guarantees entire engineering
Going on smoothly for construction, must not backbreak under the conditions of former support system, it is excessive otherwise be likely to result in foundation pit deformation, or even occur
Bigger dangerous situation brings safe mass hidden danger to engineering, and Ying Jiaqiang deformation observation works, and one month after the completion of excavation of foundation pit
Interior, Ying Jiami observation point increases observation frequency, the building retaining wall section within the scope of 2 times of foundation depths need to make it is horizontal with it is vertical
The deformation observation of both direction.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811350510.6A CN109537601A (en) | 2018-11-14 | 2018-11-14 | A kind of foundation pit supporting construction and its construction method based on campshed and inner support |
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| CN201811350510.6A CN109537601A (en) | 2018-11-14 | 2018-11-14 | A kind of foundation pit supporting construction and its construction method based on campshed and inner support |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112726628A (en) * | 2020-12-28 | 2021-04-30 | 冯国艳 | Movable inner supporting device for foundation pit supporting |
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